Anti-DD1 antibodies enable researchers to detect and measure the DD1 antigen in biological samples. This target is a reported synonym of the AKR1C1 gene, which encodes aldo-keto reductase family 1 member C1. This protein is known to function in cholesterol metabolism and homeostasis and epithelial cell differentiation, among other biological roles. The human version of DD1 has a canonical amino acid length of 323 residues and a protein mass of 36.8 kilodaltons. It is reported to be localized in the cytoplasm of cells and widely expressed in many tissue types. Other names for this target antigen include 2-ALPHA-HSD, 20-ALPHA-HSD, and C9. Western Blot is the most common application for the DD1 antibodies listed below. ELISA and Immunohistochemistry are also common applications.